FC0-U61 Infrastructure Practice Test 2 — 15 Questions

Question 1

Refer to the exhibit. The user is unable to browse the internet using domain names but can access websites by IP address. Which configuration is most likely incorrect?

Accepted Answer

DNS server addresses. The user can access websites by IP address but not by domain name, which indicates that DNS resolution is failing. The DNS server addresses configuration is most likely incorrect, as the client cannot translate domain names to IP addresses without a valid DNS server. This is a classic symptom of a misconfigured or missing DNS server setting.

Answer

IPv4 address

Answer

Subnet mask

Answer

DHCP enabled

Question 2

Refer to the exhibit. A technician is troubleshooting connectivity from a PC connected to the 192.168.1.0/24 network. The PC cannot reach the 10.0.0.0/24 network. What is the most likely cause?

Accepted Answer

GigabitEthernet0/0 is disabled. The PC on 192.168.1.0/24 cannot reach 10.0.0.0/24 because GigabitEthernet0/0 is disabled, which is the interface that provides the default gateway or the path to the router. Without an active interface on the local subnet, the PC cannot send any frames to the router, and no traffic can leave the local network. Even if routes exist, a disabled interface prevents all Layer 1 and Layer 2 communication, making connectivity impossible.

Answer

Incorrect subnet mask on the PC

Answer

Missing route to 10.0.0.0/24

Answer

Faulty cable on GigabitEthernet0/1

Question 3

Refer to the exhibit. This JSON policy is associated with an IAM user. Which of the following actions is the user permitted to perform?

Accepted Answer

Download files from example-bucket. The JSON policy grants the s3:GetObject action on the arn:aws:s3:::example-bucket/* resource, which allows the user to retrieve (download) objects from the specified S3 bucket. The Effect is set to 'Allow', so the policy explicitly permits this action. No other actions are listed in the Statement, so only downloads are permitted.

Answer

Upload files to example-bucket

Answer

Delete files from example-bucket

Answer

List the contents of example-bucket

Question 4

A small business has 20 employees using a mix of wired and wireless devices. The network uses a single router with built-in 4-port switch and Wi-Fi. Recently, employees have reported intermittent connectivity drops, especially during peak hours. The technician notices that the router's CPU usage is consistently at 90% or higher. The business cannot afford to replace the router immediately. Which of the following actions would BEST improve the situation without purchasing new hardware?

Accepted Answer

Configure VLANs to separate wired and wireless traffic. Configuring VLANs separates wired and wireless traffic into distinct broadcast domains, reducing the amount of broadcast traffic and collisions that the router's CPU must process. This lowers CPU overhead, which directly addresses the 90% CPU usage causing intermittent drops, without requiring new hardware.

Answer

Disable Quality of Service (QoS) settings

Answer

Disable the Wi-Fi network and require all devices to connect via Ethernet

Answer

Assign static IP addresses to all devices

Question 5

A company has a server room with two UPS units, each connected to a separate power circuit. The server room contains 10 servers, each with dual power supplies. One UPS fails and stops providing power. The administrator notices that half of the servers shut down, while the other half remain on. The servers that shut down were all connected to the failed UPS. However, the servers that remained on were also connected to the same UPS via their second power supply. Why did those servers not fail?

Accepted Answer

The servers that remained on had both power supplies connected to different UPS units. Option B is correct because the servers that remained on had each of their dual power supplies connected to different UPS units (one to the failed UPS and one to the working UPS). When one UPS failed, the working UPS continued to supply power through the second power supply, allowing those servers to stay operational. The servers that shut down were only connected to the failed UPS via both power supplies or had their second power supply connected to the same failed UPS, providing no redundancy.

Answer

The servers that shut down were not connected to the working UPS

Answer

The failed UPS was overloaded and only some servers lost power

Answer

The servers that remained on had only one power supply connected

Question 6

A user reports that their laptop cannot connect to the corporate Wi-Fi. Other devices in the same area work fine. The network technician checks the laptop and sees that the wireless adapter is enabled and shows available networks, but the connection attempt to the corporate SSID fails with an authentication error. Which of the following is the MOST likely cause?

Accepted Answer

The pre-shared key is incorrect. The authentication error specifically indicates that the laptop failed to verify its credentials with the access point. Since the wireless adapter is enabled and the SSID is visible, the most common cause is an incorrect pre-shared key (PSK), which prevents the 4-way handshake in WPA2/WPA3 from completing successfully.

Answer

The MAC address is filtered on the access point

Answer

The DHCP lease has expired

Answer

The wireless adapter is disabled in Device Manager

Question 7

A small office uses a single ISP-provided modem/router combination device. Employees need to connect their desktops and printers to the network. Which of the following devices would allow them to connect multiple wired devices and also extend wireless coverage?

Accepted Answer

Wireless access point. A wireless access point (WAP) connects to the ISP modem/router via Ethernet and bridges the wired LAN to a wireless network, allowing both wired and wireless clients to communicate. In this scenario, the WAP adds additional Ethernet ports for desktops and printers while also extending Wi-Fi coverage beyond the built-in router's range.

Answer

Modem

Answer

Switch

Answer

Hub

Question 8

A user reports that their laptop cannot connect to the corporate Wi-Fi. Other devices are working fine. Which TWO troubleshooting steps should the technician take first? (Choose TWO.)

Accepted Answer

Verify the SSID and password on the laptop.. Option A is correct because verifying the SSID and password is the most basic and common cause of a single device failing to connect to Wi-Fi. If other devices are working, the issue is isolated to the laptop, so checking its wireless configuration is a logical first step. This aligns with the 'isolate the problem' troubleshooting methodology.

Answer

Check the DHCP server for available IP addresses.

Answer

Update the network adapter driver.

Answer

Restart the wireless router.

Question 9

Refer to the exhibit. A technician runs ipconfig /all on a user's computer. The user can access the internet but cannot browse to any websites by domain name. What is the most likely cause?

Accepted Answer

The DNS server address is incorrect or not functioning for external lookups.. The user can access the internet (IP connectivity works) but cannot browse by domain name, which indicates that DNS resolution is failing. The `ipconfig /all` output would show a DNS server address; if that address is incorrect or the DNS server cannot perform external lookups, the computer cannot translate domain names to IP addresses, even though other network functions (like DHCP and IP routing) are working correctly.

Answer

DHCP is disabled on the computer.

Answer

The IP address is a private address and cannot access the internet.

Answer

The subnet mask should be 255.255.0.0.

Question 10

A small office has five computers connected to a switch, which is connected to a router that provides internet access. The office uses a single printer connected to one computer and shared over the network. The router has built-in DHCP and assigns IP addresses in the 192.168.0.0/24 range. Recently, the office manager added a wireless access point (WAP) to allow guests to access the internet. The WAP is connected to the switch and configured with its own DHCP server handing out addresses in the 192.168.1.0/24 range. The manager notices that some office computers are unable to access the shared printer, while others can. The computers that cannot access the printer have IP addresses in the 192.168.1.0/24 range. The printer's IP address is 192.168.0.50. What is the most likely cause of the issue?

Accepted Answer

The computers with IP addresses in the 192.168.1.0/24 range are on a different subnet than the printer.. The computers with IP addresses in the 192.168.1.0/24 range are on a different subnet than the printer, which has an IP address of 192.168.0.50. Without a router configured to route traffic between these two subnets, devices on the 192.168.1.0/24 network cannot communicate with devices on the 192.168.0.0/24 network. Since the WAP is acting as a separate DHCP server and is not routing between the subnets, the printer remains unreachable from the guest network.

Answer

The WAP's DHCP server is malfunctioning.

Answer

The switch port for the printer is faulty.

Answer

The printer is not powered on.

Question 11

A user reports that their laptop cannot connect to the corporate Wi-Fi network. Other users in the same area are connected without issues. The laptop shows it is connected to the Wi-Fi but has no internet access. Which of the following is the MOST likely cause?

Accepted Answer

Incorrect IP configuration. The laptop shows it is connected to Wi-Fi but has no internet access, which indicates that the Layer 3 (network layer) configuration is faulty. An incorrect IP configuration, such as a static IP in the wrong subnet or a failed DHCP lease, prevents the laptop from obtaining a valid default gateway and DNS server, breaking internet connectivity while the Wi-Fi association (Layer 2) remains intact.

Answer

Weak Wi-Fi signal

Answer

SSID broadcast disabled

Answer

MAC address filter enabled

Question 12

A network technician is troubleshooting a server that is not reachable from the LAN. The server has a static IP address of 192.168.1.100/24 and a default gateway of 192.168.1.1. The technician pings the gateway successfully but cannot ping the server from another workstation on the same subnet. Which TWO steps should the technician take to resolve the issue?

Accepted Answer

Verify the network adapter settings on the server. Option C is correct because the technician can ping the gateway from the server, confirming Layer 3 connectivity to the router, but cannot ping the server from another workstation on the same subnet. This points to a local configuration issue on the server itself, such as a misconfigured subnet mask, a disabled network adapter, or incorrect IP settings. Verifying the network adapter settings ensures the server's IP address, subnet mask, and default gateway are correctly applied and the adapter is enabled.

Answer

Clear the ARP cache on the server

Answer

Replace the network cable

Answer

Check DNS resolution for the server

Question 13

A technician runs the commands shown in the exhibit. Based on the output, which of the following can the technician conclude?

Accepted Answer

The computer can communicate on the local network. The output shows the computer has an IP address of 192.168.1.10 and a subnet mask of 255.255.255.0, which means it is on the 192.168.1.0/24 local network. The fact that the computer has a valid IP address and subnet mask configured indicates it can communicate with other devices on the same local network segment, as no gateway or external connectivity is required for local link-layer communication.

Answer

The computer has internet access

Answer

The DNS server is reachable

Answer

The default gateway is not configured

Question 14

Drag and drop the steps to connect a laptop to a Wi-Fi network in Windows 10 into the correct order.

Question 15

Drag and drop the steps to connect a Bluetooth device to a Windows 10 computer into the correct order.

FC0-U61 Infrastructure Practice Test 2 — 15 Questions

Exhibit

FC0-U61 Infrastructure Practice Test 2 — 15 Questions

Exhibit